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The patent EP2773230 was granted to Acetate on Jul 22, 2020. The application was filed on Nov 5, 2012 under application number EP12845824A. The patent is currently recorded with a legal status of "Revoked".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| CERDIA | Apr 20, 2021 | MEISSNER BOLTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US7585441 |
| DESCRIPTION | US7610852 |
| EXAMINATION | US3551256 |
| INTERNATIONAL-SEARCH-REPORT | EP1908362 |
| INTERNATIONAL-SEARCH-REPORT | US2008245376 |
| INTERNATIONAL-SEARCH-REPORT | WO2006007020 |
| INTERNATIONAL-SEARCH-REPORT | WO2009093051 |
| OPPOSITION | DE2558004 |
| OPPOSITION | EP0255114 |
| OPPOSITION | EP0310257 |
| OPPOSITION | EP0408354 |
| OPPOSITION | GB2118423 |
| OPPOSITION | US2011023900 |
| OPPOSITION | US2881771 |
| OPPOSITION | US3551256 |
| OPPOSITION | US3882878 |
| OPPOSITION | US5269329 |
| OPPOSITION | US5618620 |
| OPPOSITION | US6502582 |
| OPPOSITION | US7585441 |
| OPPOSITION | WO0128369 |
| OPPOSITION | WO9308708 |
| OPPOSITION | WO9716986 |
| OPPOSITION | WO9921445 |
| SEARCH | US2011023900 |
| SEARCH | US5269329 |
| SEARCH | US7585441 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
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Jun 30, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Reply to appeal
Appeal
May 25, 2023
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Mar 2, 2023
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Notice of appeal
Appeal
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Means of redress
OPPO
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Aug 3, 2020
Jun 25, 2020
Decision to grant a European patent
Search/Exam
Jun 12, 2020
(Electronic) Receipt
Search/Exam
Jun 12, 2020
French translation of claims
Search/Exam
Jun 12, 2020
German translation of the claims
Search/Exam
Jun 12, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 6, 2020
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Intention to grant (signatures)
Search/Exam
Feb 6, 2020
Text intended for grant (clean copy)
Search/Exam
Feb 6, 2020
Nov 21, 2019
(Electronic) Receipt
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Nov 21, 2019
Amended claims with annotations
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Nov 21, 2019
Amended description with annotations
Search/Exam
Nov 21, 2019
Claims
Search/Exam
Nov 21, 2019
Description
Search/Exam
Nov 21, 2019
Description
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Nov 21, 2019
Letter accompanying subsequently filed items
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Nov 21, 2019
Jul 11, 2019
Annex to the communication
Search/Exam
Jul 11, 2019
Communication from the Examining Division
Search/Exam
May 21, 2019
(Electronic) Receipt
Search/Exam
May 21, 2019
Amended claims with annotations
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May 21, 2019
Claims
Search/Exam
May 21, 2019
Letter accompanying subsequently filed items
Search/Exam
May 21, 2019
Apr 10, 2019
Apr 5, 2019
(Electronic) Receipt
Search/Exam
Apr 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 5, 2019
Dec 28, 2018
Submission concerning representation
Search/Exam
Dec 21, 2018
Submission concerning representation
Search/Exam
Nov 27, 2018
Annex to the communication
Search/Exam
Nov 27, 2018
Communication from the Examining Division
Search/Exam
Jun 13, 2018
Apr 27, 2018
Annexes in respect of a client data request
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Apr 27, 2018
Apr 5, 2018
Mar 23, 2018
(Electronic) Receipt
Search/Exam
Mar 23, 2018
Amended claims with annotations
Search/Exam
Mar 23, 2018
Claims
Search/Exam
Mar 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2018
Mar 8, 2018
Nov 29, 2017
Nov 29, 2017
Nov 16, 2017
Annex to the communication
Search/Exam
Nov 16, 2017
Communication from the Examining Division
Search/Exam
Nov 10, 2017
Examination started
Search/Exam
Jul 13, 2017
Jul 6, 2017
(Electronic) Receipt
Search/Exam
Jul 6, 2017
Enquiry as to the processing of the file
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Jul 6, 2017
Letter accompanying subsequently filed items
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Jan 28, 2016
Jan 28, 2016
Amended claims with annotations
Search/Exam
Jan 28, 2016
Jan 28, 2016
Amended description with annotations
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Jan 28, 2016
Amendments received before examination
Search/Exam
Jul 31, 2015
Jul 27, 2015
Jul 24, 2015
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Jul 15, 2015
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European search opinion
Search/Exam
Jul 15, 2015
Supplementary European search report
Search/Exam
Jun 9, 2015
Search started
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Nov 14, 2014
(Electronic) Receipt
Search/Exam
Nov 14, 2014
Nov 14, 2014
Amended claims with annotations
Search/Exam
Nov 14, 2014
Amendments received before examination
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Nov 14, 2014
Letter accompanying subsequently filed items
Search/Exam
Aug 13, 2014
Aug 4, 2014
Jul 16, 2014
Jul 7, 2014
Refund of fees
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Jul 3, 2014
Jul 1, 2014
Communication to designated inventor
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Jul 1, 2014
Communication to designated inventor
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Jul 1, 2014
Communication to designated inventor
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Jul 1, 2014
Communication to designated inventor
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Jun 2, 2014
(Electronic) Receipt
Search/Exam
Jun 2, 2014
Request for entry into the European phase
Search/Exam
May 30, 2014
May 20, 2014
May 6, 2014
Mar 14, 2014
Information on entry into European phase
Search/Exam
Jul 11, 2013
Copy of the international search report
Search/Exam
Jul 11, 2013
May 10, 2013
Published international application - A2
Search/Exam